The different Kaiser plans vary in copayments, max out of pocket costs, and such on the insurance side of things, but on the medical side, it's all the same. I'm on a high deductible HSA eligible individual plan (bought through
CoveredCa.com), but I get the same care as everyone on employer plans, Gold plans, etc.
The only variations are in the bills and the copayments I get asked for when I check in.
Kaiser is very Trans-friendly. My medical record has footnotes on my gender and first name, so most places where I check in I get named correctly, with the right pronouns. The pharmacy, alas, has to use legal names, so until I get the legal paperwork done I have to deal with that. Nobody so far has even batted an eye when I show up dressed properly, even though I don't remotely pass.
I'm up in the northeast bay/delta area, and the facilities here are all good.
I'm pretty sure they'll support self-injection. They have training classes, even. You'll want to work with your endocrinologist on the drugs once you are assigned on and in 'the system'. The ones that work with the transgender community seem pretty good.
The doctors, therapists, and endocrinologist I've seen so far are actually not at the Multi-Specialty Transitions center, at least not full time. They've been at the regional medical center, so that has been pretty easy for me. There's a group session that meets regularly at that center, too, with everything from post-op to pre-everything folks.
Oh, by the way, Welcome!

This is a really great site to share information and resources, and there are lots of friendly and helpful folks here. I bet one of our moderators will be along shortly to welcome you and share some links to even more neat stuff.
- Michelle